[Intel-gfx] [PATCH 06/13] drm/i915/bdw: implement semaphore signal

[Chris Wilson]

On Tue, Feb 11, 2014 at 02:25:43PM -0800, Ben Widawsky wrote:
> On Tue, Feb 11, 2014 at 10:23:38PM +0000, Chris Wilson wrote:
> > Gut feeling is that it fixes an issue with IVB TLB invalidate.
> > (Not yet sure if the bug I was looking at was accidentally fixed at the
> > same time as testing this.)
> > So cc stable@

> You still want a separate patch?

Actually, bad news for me. The bug I had thought had gone, was merely
dorminant. It reappeared, so I have no known issue that this fixes. :(

I still think we need to add the Pipe Control Flush Enable to the TLB
invalidate sequence though, but no longer urgent.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre